A navy dentist stops near the parked car to help a stranded motorist who pulls out a gun. The team investigates a murder with the help from a local sheriff, Charley, when they find out about a the similar murder of the Navy civilian employee in the was going through the nasty divorce,the wife is suspected but her alibi is perfect.

An NCIS agent who used to work under Gibbs asks for the team's help investigating a case where sailors on an aircraft carrier are dying of a drug overdose, but have no history of any kind of drug abuse.